ORCA-C/Tests/Spec.Conform/SPC17.7.0.1.CC
Stephen Heumann 91d33b586d Fix various C99+ conformance issues and bugs in test cases.
The main changes made to most tests are:

*Declarations always include explicit types, not relying on implicit int. The declaration of main in most test programs is changed to be "int main (void) {...}", adding an explicit return type and a prototype. (There are still some non-prototyped functions, though.)

*Functions are always declared before use, either by including a header or by providing a declaration for the specific function. The latter approach is usually used for printf, to avoid requiring ORCA/C to process stdio.h when compiling every test case (which might make test runs noticeably slower).

*Make all return statements in non-void functions (e.g. main) return a value.

*Avoid some instances of undefined behavior and type errors in printf and scanf calls.

Several miscellaneous bugs are also fixed.

There are still a couple test cases that intentionally rely on the C89 behavior, to ensure it still works.
2022-10-17 20:17:24 -05:00

75 lines
2.2 KiB
C++

/* Special Conformance Test 17.7.0.1: Verification of gets function */
/* */
/* The tester will be asked to enter some strings. The strings will */
/* then be echoed to the screen. The strings should be verified */
/* that they are the same as those entered. */
#include <stdio.h>
int main (void)
{
int i;
char string [20] = ""; /* initialize input string to null string */
char *strPtr;
printf ("Please enter a string which is shorter than 20 characters.\n");
printf ("Signal string is complete with CR.\n");
strPtr = gets (string); /* test reading until CR seen */
if (strPtr == NULL)
goto Fail;
printf ("The string entered was:\n");
i = puts (string);
if (i)
goto Fail1;
printf ("This message should appear immediately below the string.\n");
printf ("Please enter only the end-of-file character sequence (CTRL@)\n");
strPtr = gets (string); /* test reading with EOF seen before */
if (strPtr != NULL) /* any other characters */
goto Fail2;
if (! feof (stdin))
goto Fail3;
i = fseek (stdin, 0L, SEEK_CUR); /* clear EOF indication */
if (i)
goto Fail4;
printf ("The first string entered was:\n"); /* string shouldn't change */
i = puts (string);
if (i)
goto Fail1;
printf ("\n");
printf ("Please enter a string which is shorter than 20 characters.\n");
strPtr = gets (string); /* test reading until CR seen */
if (strPtr == NULL)
goto Fail;
printf ("The string entered was:\n");
i = puts (string);
if (i)
goto Fail1;
printf ("This message should appear immediately below the string.\n");
return 0;
Fail:
printf ("Failed Special Conformance Test 17.7.0.1\n");
return 0;
Fail1:
printf ("Unable to write to standard out\n");
return 0;
Fail2:
printf ("Reading EOF before any other chars doesn't return NULL ptr\n");
return 0;
Fail3:
printf ("EOF for standard input not detected\n");
return 0;
Fail4:
printf ("Unable to FSEEK on stdin\n");
return 0;
}